<h2>题目编号 : 2</h2>
<div style="color:#666;font-size:80%;">19 October 2001</div><br />
<div class="problem_content">
<p>斐波那契数列中新的项是由它前面两项相加得到的。从 1 和 2 开始，前 10 项是：</p>
<p style='text-align:center;'>1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...</p>
<p>请对斐波那契数列中所有不大于四百万的奇数求和。</p>
<!--
Note: This problem has been changed recently, please check that you are using the right parameters.
-->
</div><br />
